Yasugi is a city in Shimane Prefecture, Japan. It lies in the eastern part of the prefecture, in the Chūgoku region on the western side of Honshu.
As of 31 May 2023, the city had an estimated population of 35,965 living in 14,257 households, with a population density of 85 persons per square kilometre. Its total area is 420.93 square kilometres (162.52 square miles).